Coburn and Barnum was one of the most important architectural firms in late 19th century Cleveland. They designed over twenty houses along Euclid Avenue's Millionaires Row, several buildings for Case Institute of Technology, Western Reserve University, and Oberlin College, and large commercial buildings including the Blackstone Power Block. They designed several churches including the Euclid Avenue Congregational Church, the Franklin Avenue Congregational Church, the Olivet Baptist Church, and Trinity Baptist Church. Beyond Cleveland they had commissions in Oberlin, Delaware, and Ashland, Ohio, and Palm Beach, Florida. The office staff included Benjamin Hubbell, W. Dominck Benes, John Edelmann, Albert Skeel, Frank Hall, and Herbert Briggs. The firm would become Coburn, Barnum and Benes, when W. Dominick Benes was made partner, and became Coburn, Barnum, Benes, and Hubbell when Benjamin Hubbell became a partner. The firm dissolved when Forrest Coburn died in 1897. Several of the firm's architectural plans can be found at the Western Reserve Historical Society library.